Features: 1.High-precision 28nm Low Power Gps - The built-in 28nm GPS chip, through several product updates and iterations, as well as continuous optimization and adjustment performs even better in satellite search speed, positioning accuracy, and power consumption. 2.All-day Heart Rate Monitoring - Equipped with an advanced heart rate optical sensor, which can perform 24-hour uninterrupted high-precision heart rate detection, safeguarding your health all the time. 3.Build Better Bedtime Habits - provides a tracking of light and deep sleeping as well as heart rate during sleeping to help you build better bedtime habits. 4.Multi Mainstream Exercise Modes - Supports mulit mainstream exercise modes, which accurately track your sports activities. There are also multiple professional sensors that record physical data in full, and perform scientific analysis on them to enhance youe exercise capacity. 5.Better Battery Life - 15Days for basic watch mode; 7Days for daily use mode; 235mins for GPS continuously on time. Specifications: Product size: about 105x158x30mm Band material: silicone Screen size: 1.3 inches Interface: USB 2.0 Color: blue, black Bluetooth: 4.0 Battery: 280mAh Notice: Due to the different monitor and light effect, the actual color maybe a slight different from the picture color. Please allow 5-30mm differs due to manual measurement. Package List: 1 x Fitness Smartwatch 1 x Cable 1 x User manual